Automatic constant-pressure workpiece jacking device for tailstock of numerical control grinding machine
The automatic constant pressure workpiece holding device on the tailstock uses components such as electric push rods and clamps to achieve stable holding, which solves the problem of loose center drill bits in CNC grinding and improves the machining accuracy and quality of workpieces.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-03-24
AI Technical Summary
During CNC grinding, workpiece vibration can cause slight displacement or loosening of the center drill bit, affecting machining accuracy and quality.
The tailstock automatic constant pressure workpiece holding device includes an electric push rod, a drive block, a clamp and a locking mechanism for the rubber plate, combined with a disc spring and a pressure sensor, to achieve stable holding and constant pressure holding.
It effectively prevents the center drill bit from loosening, ensures the workpiece is firmly held, and improves machining accuracy and quality.
Smart Images
Figure CN224027330U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to numerical control grinding machine tailstock technical field, especially a kind of tailstock automatic constant pressure top holding workpiece device of numerical control grinding machine. BACKGROUND
[0002] Tailstock of numerical control grinding machine is the important component of grinder, mainly used to support the end of workpiece in machining process, and guarantee the accurate position and stable machining of workpiece with main shaft;Automatic top holding workpiece device makes tailstock center drill bit always hold workpiece in machining process, guarantees machining precision and quality.
[0003] Then numerical control grinding machine machining process, grinding wheel will produce greater cutting force and vibration to workpiece, the vibration received by workpiece can be transferred to tailstock center drill bit, prone to cause the tiny displacement or loosening of center drill bit, which will cause the position of workpiece to change, and further affect the machining effect of workpiece.
[0004] Therefore, a kind of tailstock automatic constant pressure top holding workpiece device of numerical control grinding machine is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing tailstock automatic constant pressure top holding workpiece device of numerical control grinding machine to solve the above problems, and improves the problem that vibration received by workpiece can be transferred to tailstock center drill bit, prone to cause the tiny displacement or loosening of center drill bit.
[0006] The utility model realizes the above-mentioned purpose by the following technical scheme, a kind of tailstock automatic constant pressure top holding workpiece device of numerical control grinding machine, including: tailstock shell, the surface of tailstock shell is equipped with top holding mechanism;Locking mechanism, the locking mechanism includes electric push rod fixedly connected to the inner bottom wall of tailstock shell, the telescopic end of electric push rod is fixedly connected with driving block, the surface of top holding mechanism is equipped with sliding block, the inside of tailstock shell is equipped with the number of two clamps, the surface lower end of clamp is contacted with the surface of driving block, the inner wall of clamp is slidably connected with rubber plate, the surface of rubber plate is clamped to the inner wall of sliding block, the opposite end of rubber plate and clamp is fixedly connected with first spring.By electric push rod, driving block, clamp and rubber plate, the sliding block is realized to resist and limit, and then the top holding mechanism is realized to lock, by first spring, the rubber plate can be clamped into sliding block self-adapting, and then the resisting effect of sliding block is guaranteed, the top holding mechanism is guaranteed to top hold workpiece, and then the machining effect of workpiece is guaranteed.
[0007] Preferably, the top holding mechanism comprises a sliding cylinder fixedly connected to the inner top wall of the tail seat shell, the inner wall of the sliding cylinder is rotationally connected with a lead screw, the surface of the lead screw is threadedly connected with a sliding rod, the surface of the sliding block is fixedly connected to the surface of the sliding rod, the surface of the sliding block is slidingly connected to the inner wall of the sliding cylinder, the inner wall of the sliding rod is slidingly connected with a movable rod, and one end of the movable rod is rotationally connected with a center drill.
[0008] Preferably, one end of the lead screw is fixedly connected with a worm gear, the surface of the worm gear is meshingly connected with a worm, the surface of the worm is rotationally connected to the upper end of the inner wall of the tail seat shell, the upper end of the inner wall of the tail seat shell is fixedly connected with a servo motor, and the output shaft of the servo motor is fixedly connected to one end of the worm.
[0009] Preferably, the opposite ends of the movable rod and the sliding rod are fixedly connected with disc springs, and one end of the inner wall of the sliding rod is fixedly connected with a pressure sensor. Through the disc springs and the pressure sensor, the center drill can constantly hold the workpiece at a constant pressure, so that the locking mechanism automatically locks the sliding rod, and the center drill is stably and constantly held to hold the workpiece.
[0010] Preferably, the inner wall of the tail seat shell is fixedly connected with two guide rods at the lower end, and the inner wall of the clamping frame is slidingly connected to the surface of the guide rods. Through the guide rods, the movement of the clamping frame is limited, and the clamping frame is prevented from deviating during movement.
[0011] Preferably, the opposite ends of the guide rods and the clamping frame are fixedly connected with second springs. Through the second springs, the clamping frame is pushed, and the locking of the sliding block is automatically released.
[0012] Preferably, the surface of the lower end of the clamping frame and the surface of the driving block are rollingly connected with rolling balls, and the surface of the rolling balls is rollingly connected to the inner wall of the tail seat shell.
[0013] Preferably, the inner wall of the tail seat shell is fixedly connected with two stop rods at the lower end. Through the stop rods, the movement position of the driving block is limited, and the clamping frame is prevented from deviating from the inclined surface of the driving block during movement.
[0014] The beneficial effects of the utility model are:
[0015] 1. The electric push rod, the driving block, the clamping frame and the rubber plate are used to limit and position the sliding block, lock the top holding mechanism, enable the rubber plate to be adaptively clamped in the sliding block through the first spring, guarantee the positioning effect of the sliding block, and guarantee the machining effect of the workpiece through the stable top holding of the top holding mechanism.
[0016] 2. By the disc spring and the pressure sensor, the constant pressure holding of the workpiece by the tailstock drill bit is realized, and then the locking mechanism automatically locks the slide rod, so that the tailstock drill bit is stably and constantly held to hold the workpiece. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the overall structure schematic view of the utility model;
[0018] Figure 2 It is the tailstock housing sectional view of the utility model;
[0019] Figure 3 It is the top holding mechanism and locking mechanism structure schematic view of the utility model;
[0020] Figure 4 It is Figure 3 The enlarged view of A.
[0021] In the figure: 1, tailstock housing; 2, top holding mechanism; 21, sliding cylinder; 22, screw rod; 23, slide rod; 24, movable rod; 25, tailstock drill bit; 26, worm wheel; 27, worm; 28, servo motor; 3, locking mechanism; 31, clamping frame; 32, sliding block; 33, rubber plate; 34, first spring; 35, electric push rod; 36, driving block; 37, guide rod; 38, second spring; 39, ball; 310, disc spring; 311, pressure sensor; 312, blocking rod. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0023] In specific implementation: as Figures 1-4 shown, an automatic constant pressure holding workpiece device of tailstock of numerical control grinding machine, include: tailstock housing 1, the surface of tailstock housing 1 is equipped with top holding mechanism 2;Locking mechanism 3, locking mechanism 3 includes electric push rod 35 fixedly connected in the bottom wall of tailstock housing 1, the telescopic end of electric push rod 35 is fixedly connected with driving block 36, the surface of top holding mechanism 2 is equipped with sliding block 32, the inside of tailstock housing 1 is equipped with two clamping frames 31, the surface lower end of clamping frame 31 contacts the surface of driving block 36, the inner wall of clamping frame 31 is slidably connected with rubber plate 33, the surface of rubber plate 33 is clamped to the inner wall of sliding block 32, the opposite end of rubber plate 33 and clamping frame 31 is fixedly connected with first spring 34.
[0024] As Figure 3As shown, the top holding mechanism 2 includes a sliding cylinder 21 fixedly connected to the top wall in the tailstock shell 1, the inner wall of the sliding cylinder 21 is rotationally connected with a lead screw 22, the surface of the lead screw 22 is threadedly connected with a sliding rod 23, the surface of the sliding block 32 is fixedly connected to the surface of the sliding rod 23, the surface of the sliding block 32 is slidingly connected to the inner wall of the sliding cylinder 21, the inner wall of the sliding rod 23 is slidingly connected with a movable rod 24, one end of the movable rod 24 is rotationally connected with a center drill 25, one end of the lead screw 22 is fixedly connected with a worm gear 26, the surface of the worm gear 26 is meshingly connected with a worm 27, the surface of the worm 27 is rotationally connected to the upper end of the inner wall of the tailstock shell 1, the upper end of the inner wall of the tailstock shell 1 is fixedly connected with a servo motor 28, the output shaft of the servo motor 28 is fixedly connected to one end of the worm 27, the opposite end of the movable rod 24 and the sliding rod 23 is fixedly connected with a disc spring 310, one end of the inner wall of the sliding rod 23 is fixedly connected with a pressure sensor 311.
[0025] When the workpiece needs to be top-held, the tailstock shell 1 is bolted on the top of the guide block, the guide block is installed on the electric guide rail, one end of the workpiece is abutted on the chuck on the main shaft, the numerical control screen on the numerical control grinding machine is operated to automatically start the electric guide rail, the electric guide rail drives the tailstock shell 1 to move close to the workpiece to a suitable position, the servo motor 28 is automatically started, the output shaft of the servo motor 28 rotates clockwise to drive the worm 27 to rotate, the rotating worm 27 drives the worm gear 26 to rotate, the rotating worm gear 26 drives the lead screw 22 to rotate, the rotating lead screw 22 drives the sliding rod 23 to move in the sliding cylinder 21, the movement of the sliding rod 23 drives the movable rod 24 and the center drill 25 to move, so that the center drill 25 top-holds the other end of the workpiece;
[0026] At this time, the sliding rod 23 will continue to move, thereby extruding the disc spring 310 and driving the pressure sensor 311 to abut on one end of the movable rod 24, after receiving the abutting signal, the pressure sensor 311 transmits the signal to the servo motor 28 and the electric push rod 35, so that the servo motor 28 is automatically turned off and the electric push rod 35 is automatically started, the extension end of the electric push rod 35 moves to push the driving block 36 to move, the inclined surface on the driving block 36 moves to push the clamping frame 31 to move, so that the two clamping frames 31 abut on the surface of the sliding block 32 and move close to each other, so that the rubber plate 33 moves to the inclined surface of the inner wall of the sliding block 32, when the triangular block on the rubber plate 33 is not matched with the inner wall of the sliding block 32, the inner wall of the sliding block 32 will abut on the triangular block on the rubber plate 33, so that the triangular block moves horizontally and is adaptively clamped in the sliding block 32, thereby locking the sliding block 32 and the sliding rod 23, so that the center drill 25 top-holds the workpiece with constant pressure and stability, at this time, the cutting tool on the numerical control grinding machine abuts on the workpiece, the chuck on the main shaft rotates and drives the workpiece to rotate, thereby cutting the workpiece.
[0027] As Figure 3As shown, the inner wall lower end of the tailstock housing 1 is fixedly connected with two guide rods 37, the inner wall lower end of the clamping frame 31 is slidingly connected to the surface of the guide rod 37, the opposite end of the guide rod 37 and the clamping frame 31 is fixedly connected with a second spring 38, the surface lower end of the clamping frame 31 and the surface of the driving block 36 are rollingly connected with a ball 39, the surface of the ball 39 is rollingly connected to the inner wall of the tailstock housing 1, and the inner wall lower end of the tailstock housing 1 is fixedly connected with two stop rods 312.
[0028] After cutting, the electric push rod 35 is automatically opened, the telescopic end of the electric push rod 35 drives the driving block 36 to move, so that one side of the driving block 36 abuts against the surface of the stop rod 312, the electric push rod 35 is automatically closed, the elastic force of the second spring 38 pushes the clamping frame 31 away from the surface of the sliding block 32, thereby releasing the locking of the sliding block 32 and the sliding rod 23, the servo motor 28 is automatically opened, the output shaft of the servo motor 28 rotates counterclockwise, the worm 27 and the worm gear 26 drive the lead screw 22 to rotate, the rotating lead screw 22 drives the sliding rod 23 to move towards the worm gear 26, thereby driving the center drill 25 and the movable rod 24 away from one end of the workpiece, and the cut workpiece can be taken out.
[0029] In use, the output shaft of the servo motor 28 rotates clockwise through the worm 27, the worm gear 26 and the lead screw 22 to drive the sliding rod 23, the movable rod 24 and the center drill 25 to move, so that the center drill 25 holds the other end of the workpiece, at this time the sliding rod 23 will continue to move, thereby pressing the disc spring 310 and driving the pressure sensor 311 to abut against one end of the movable rod 24, after receiving the abutting signal, the pressure sensor 311 automatically closes the servo motor 28 and automatically opens the electric push rod 35, the telescopic end of the electric push rod 35 moves to push the driving block 36 to move, the inclined surface on the driving block 36 moves to push the clamping frame 31 to move and abut against the surface of the sliding block 32, so that the rubber plate 33 moves to the inclined surface of the inner wall of the sliding block 32, when the triangular block on the rubber plate 33 is not matched with the inner wall of the sliding block 32, the inner wall of the sliding block 32 will abut against the triangular block on the rubber plate 33, so that the triangular block moves horizontally and is adaptively clamped in the sliding block 32, thereby locking the sliding block 32 and the sliding rod 23, so that the center drill 25 holds the workpiece with constant pressure and stability.
[0030] It should be noted that the tailstock housing 1, the sliding cylinder 21, the sliding rod 23, the movable rod 24, the servo motor 28, the center drill 25, the electric push rod 35 and the pressure sensor 311 in the above description are all relatively mature devices in the prior art, and the specific model can be selected according to actual needs, and the servo motor 28, the electric push rod 35 and the pressure sensor 311 can be powered by built-in power supply or mains power supply, and the specific power supply mode is selected as needed, which will not be described here.
[0031] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.
Claims
1. An automatic constant pressure workpiece holding device for the tailstock of a CNC grinding machine, characterized in that, include: Tail base housing (1), the surface of which is provided with a top holding mechanism (2); The locking mechanism (3) includes an electric push rod (35) fixedly connected to the inner bottom wall of the tailstock housing (1). The telescopic end of the electric push rod (35) is fixedly connected to a drive block (36). The surface of the top holding mechanism (2) is provided with a slider (32). The tailstock housing (1) is provided with two clamps (31). The lower end of the surface of the clamp (31) contacts the surface of the drive block (36). The inner wall of the clamp (31) is slidably connected with a rubber plate (33). The surface of the rubber plate (33) is engaged with the inner wall of the slider (32). The opposite end of the rubber plate (33) and the clamp (31) is fixedly connected with a first spring (34).
2. The automatic constant pressure workpiece holding device for the tailstock of a CNC grinding machine according to claim 1, characterized in that: The top holding mechanism (2) includes a slide cylinder (21) fixedly connected to the inner top wall of the tailstock housing (1). A lead screw (22) is rotatably connected to the inner wall of the slide cylinder (21). A slide rod (23) is threadedly connected to the surface of the lead screw (22). The surface of the slider (32) is fixedly connected to the surface of the slide rod (23). The surface of the slider (32) is slidably connected to the inner wall of the slide cylinder (21). A movable rod (24) is slidably connected to the inner wall of the slide rod (23). One end of the movable rod (24) is rotatably connected to a center drill bit (25).
3. The automatic constant pressure workpiece holding device for the tailstock of a CNC grinding machine according to claim 2, characterized in that: One end of the lead screw (22) is fixedly connected to a worm gear (26), the surface of the worm gear (26) is meshed with a worm (27), the surface of the worm (27) is rotatably connected to the upper end of the inner wall of the tailstock housing (1), the upper end of the inner wall of the tailstock housing (1) is fixedly connected to a servo motor (28), and the output shaft of the servo motor (28) is fixedly connected to one end of the worm (27).
4. The automatic constant pressure workpiece holding device for the tailstock of a CNC grinding machine according to claim 2, characterized in that: Disc springs (310) are fixedly connected to the opposite ends of the movable rod (24) and the slide rod (23), and a pressure sensor (311) is fixedly connected to one end of the inner wall of the slide rod (23).
5. The automatic constant pressure workpiece holding device for the tailstock of a CNC grinding machine according to claim 1, characterized in that: The lower end of the inner wall of the tailstock housing (1) is fixedly connected to two guide rods (37), and the lower end of the inner wall of the clamp (31) is slidably connected to the surface of the guide rods (37).
6. The automatic constant pressure workpiece holding device for the tailstock of a CNC grinding machine according to claim 5, characterized in that: The guide rod (37) and the clamp (31) are fixedly connected to a second spring (38).
7. The automatic constant pressure workpiece holding device for the tailstock of a CNC grinding machine according to claim 1, characterized in that: The lower end of the surface of the clamp (31) and the surface of the drive block (36) are both rolledly connected with balls (39), and the surface of the balls (39) is rolledly connected to the inner wall of the tailstock housing (1).
8. The automatic constant pressure workpiece holding device for the tailstock of a CNC grinding machine according to claim 1, characterized in that: Two stop bars (312) are fixedly connected to the lower end of the inner wall of the tailstock housing (1).